Soft denture liner,
does it really help with Reduced mandibular residual-ridge resorption in complete-denture wearers?
research showsThe grade is C with 50 points. In a 28-person randomized trial, 12-month bone-height loss with soft liner versus conventional dentures was 0.7 versus 1.4 mm in the right posterior region, 0.6 versus 1.4 mm anteriorly, and 0.9 versus 1.7 mm in the left posterior region. The differences are large, but the endpoint is an imaging surrogate from one very small trial.
ads claimA cushioning material property is not the same claim as less pain or better denture function. The confirmed outcome was 12-month radiographic bone-height loss.
Useful facts when choosing a product
- The mandibular denture was lined with heat-cured acrylic Permasoft; control used conventional heat-cured acrylic.
- All dentures used bilateral balanced occlusion, with panoramic radiographic markers for bone-height measurement.
- Two independent blinded examiners performed measurements and repeated discrepant readings.
What the research actually shows
A single Indian center randomized 28 participants, 14 per group, using sex-stratified computer-generated blocks and analyzed all 28 through 12 months. A statistician generated numbers, but implementation of allocation concealment was not reported. The radiographer was blinded and two independent examiners were also masked, so assessor masking was not counted as a flaw. Enrollment below 200, unreported allocation concealment, and lack of an identifiable prospective trial registration remain. The paper declared no financial support and no conflicts, but no funding is not confirmed public funding.
Why this is classified as C (50)
A large imaging-surrogate signal from one 28-person trial with incomplete allocation and registration reporting gives C with 50 points.
Counterpoint. Whether ridge preservation improves pain, function, or retreatment was not established.
Rejudgment record. Cross-check applied — Cross-checked the article for all-28 analysis, computer stratified-block assignment, masked radiography and measurement, regional results, no funding, and unconfirmed registration
| Endpoint | S | Surrogate marker - laboratory or imaging measures |
| Replication | R1 | Single confirmatory trial |
| Independence | I1 | Mixed funding sources |
| Effect size | E+ | Meets the clinically important threshold |
The scoring table and the verdict agree (C).
Sub-claim grades by effect
This ingredient is marketed for several effects. A single overall grade blends strong and weak claims together, so each effect is graded separately here. The overall grade reflects the strongest disconfirming or core claim.
| Effect (sub-claim) | Grade | Basis |
|---|---|---|
| Reduced mandibular residual-ridge resorption | C | Large 12-month differences appeared in all three imaging regions in one very small trial. |
| Improved pain, chewing, or denture stability | ? | Patient-centered outcomes were not reported as efficacy endpoints. |
Cross-check — Codex and Claude
Evidence Table
| Study | Design | Sample | Funding | Endpoint | Result | Weight |
|---|---|---|---|---|---|---|
| Babu BD, Jain V, Pruthi G, Mangtani N, Pillai RS. 2017 | Single-center sex-stratified computer block-randomized parallel trial | 28 | Financial support and sponsorship declared nil; no manufacturer-support statement | Bone-height loss in three mandibular regions on panoramic radiographs | At 12 months, soft liner versus control: 0.7 vs 1.4 mm, 0.6 vs 1.4 mm, and 0.9 vs 1.7 mm; each P=.01 | Very small single trial with a large imaging-surrogate signal |
Receipt — 1 References
Of 1 cited sources, 1 had limited original-page access (blocked or summary-only) and were verified via index/summary, marked partial; the rest were verified at the original page. As of 2026-08-17.
Reviewed and approved: Chamgap Editorial Team · Approval date: 2026-08-17 · Corrections: none
Cite this verdict
[Chamgap] Soft denture liner x mandibular ridge resorption — Evidence Grade C·50. 1 cited sources checked. Source: https://chamgap.com/en/verdicts/joint-bone/soft-denture-liner-mandibular-ridge-resorption/ · CC BY 4.0CC BY 4.0 — free to use with attribution; do not distort grades, numbers, or verdict meaning.
What this document does and does not do
Chamgap is an information source. It reports what research has and has not confirmed; it does not tell readers what to take or buy. That decision belongs to readers and, when needed, medical or legal professionals. This verdict reflects literature available up to the search date and may change as new research appears. Nothing here is medical advice.